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11.
Riots: On Surplus Population/Housing/Monuments
Gal Kirn, Niloufar Tajeri, 2018, unpublished conference contribution

Keywords: surplus population, riots, monument to riots, form of riots, destruction of urban fabric, regeneration projects, urban renewal, urban destruction
Published in RUNG: 25.08.2020; Views: 2354; Downloads: 0
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12.
Notes on the Archive of Dissent: Monument to Sub/Urban Riots
Gal Kirn, niloufar tajeri, 2016, independent professional component part or a chapter in a monograph

Keywords: monument to riot, sub-urban riots, dissent, political violence
Published in RUNG: 20.08.2020; Views: 2256; Downloads: 0
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13.
The Circular Economy in Adaptive Reuse: Respecting Authenticity and Integrity
Marco Acri, Saša Dobričić, Jukka Jokilehto, 2019, published scientific conference contribution

Abstract: One of the main topics of discussion and research at present in the building sector is related to the principles of circular economy in a new global scenario of resilience and sustainability. Given that most of European urban areas and landscapes are considered as cultural, it derives that the circular economy should be also applied to the actions and processes of conservation and valorisation, giving thus new emphasis on the concept of adaptive reuse. Thus, it is not merely an issue of retrofitting historic buildings to respond to energy efficiency parameters, or to adapt them for the climate change threats, but much more: it is about rethinking adaptive reuse of cultural heritage (adaptive in both directions) within and overall sustainable process which intakes reflections on materials, techniques, technologies, praxes, but also policies, businesses, management and governance. This is the effort of the CLIC project, Circular Models leveraging investments in Cultural heritage adaptive reuse, in the Horizon2020 research framework, where the University of Nova Gorica is a partner. This new approach in a global market economy perspective is strongly looking backwards to the traditional building site mechanisms, techniques and procedures, as matured in logistic and technological constraints. In history though, prior of the enforcing of the conservation theory principles, the aspects of authenticity and integrity were not a reference for the builders as the materials and the technologies were usual, repetitive for centuries, while today they are essential criteria for conservation and reuse. But what does it mean today looking at circular models in adaptive reuse? Adaptive reuse refers to the need to adapt cultural heritage to new needs and uses, but circularity ask also to adapt to the cultural heritage peculiarities and fragilities. May this mean we have an additional ally for the preservation of the integrity and the authenticity, as well as for a new wave in preservation of objects, urban and cultural landscapes?
Keywords: Circular Economy, Heritage Adaptive Reuse, Conservation Theory, Authenticity and Integrity of Cultural Heritage, Historic Urban Landscape
Published in RUNG: 16.01.2020; Views: 3674; Downloads: 0
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14.
The Circular Character of Building Tradition: Which Challenges for the HUL Approach
Marco Acri, Saša Dobričić, Jukka Jokilehto, 2019, published scientific conference contribution

Keywords: Circular Economy, Heritage, Adaptive Reuse HUL, Tradition, Urban Conservation, Heritage Preservation, Heritage Conservation
Published in RUNG: 14.01.2020; Views: 3111; Downloads: 0
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A feasibility study of the use of reactive tracers to determine outdoor daytime OH radical concentrations within the urban environment
Iain R. White, Damien Martin, K Fredrik Petersson, Stephen J Henshaw, Graham Nickless, Guy C Lloyd-Jones, Kevin C Clemitshaw, Dudley E Shallcross, 2014, original scientific article

Abstract: Using a specifically designed chemical tracer to indirectly measure local atmospheric hydroxyl radical (OH) concentrations is a very appealing concept. Such a tracer will provide information on the amount of OH a tracer encounters, as it moves through the urban environment and provide a stringent test of models. However, to date an outdoor experiment such as this has not been conducted. This article discusses the reasons why this is so and examines the feasibility of using tracers to measure integrated urban OH levels over short (≤1km) distances.
Keywords: reactive tracers, OH radicals, NO3 radicals, oxidising rate, dispersion, urban
Published in RUNG: 18.07.2019; Views: 2917; Downloads: 0
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18.
Atmospheric chemistry and physics in the atmosphere of a developed megacity (London): An overview of the REPARTEE experiment and its conclusions
Roy M Harrison, Manuel DallOsto, David C S Beddows, Alistair J Thorpe, William J Bloss, James D Allan, Hugh Coe, James R Dorsey, Martin W Gallagher, Claire Martin, John Whitehead, Paul I Williams, Roderick L Jones, Justin M Langridge, A K Benton, Stephen M Ball, Ben Langford, C Nicholas Hewitt, Brian Davison, Damien Martin, K Fredrik Peterson, Stephen J Henshaw, Iain R. White, Dudley E Shallcross, Janet F Barlow, Tyrone Dunbar, Fay Davies, Eiko Nemitz, Gavin J Phillips, Carole Helfter, Chiara F Di Marco, Steven Smith, 2012, review article

Abstract: The Regents Park and Tower Environmental Experiment (REPARTEE) comprised two campaigns in London in October 2006 and October/November 2007. The experiment design involved measurements at a heavily trafficked roadside site, two urban background sites and an elevated site at 160-190 m above ground on the BT Tower, supplemented in the second campaign by Doppler lidar measurements of atmospheric vertical structure. A wide range of measurements of airborne particle physical metrics and chemical composition were made as well as measurements of a considerable range of gas phase species and the fluxes of both particulate and gas phase substances. Significant findings include (a) demonstration of the evaporation of traffic-generated nanoparticles during both horizontal and vertical atmospheric transport; (b) generation of a large base of information on the fluxes of nanoparticles, accumulation mode particles and specific chemical components of the aerosol and a range of gas phase species, as well as the elucidation of key processes and comparison with emissions inventories; (c) quantification of vertical gradients in selected aerosol and trace gas species which has demonstrated the important role of regional transport in influencing concentrations of sulphate, nitrate and secondary organic compounds within the atmosphere of London; (d) generation of new data on the atmospheric structure and turbulence above London, including the estimation of mixed layer depths; (e) provision of new data on trace gas dispersion in the urban atmosphere through the release of purposeful tracers; (f) the determination of spatial differences in aerosol particle size distributions and their interpretation in terms of sources and physico-chemical transformations; (g) studies of the nocturnal oxidation of nitrogen oxides and of the diurnal behaviour of nitrate aerosol in the urban atmosphere, and (h) new information on the chemical composition and source apportionment of particulate matter size fractions in the atmosphere of London derived both from bulk chemical analysis and aerosol mass spectrometry with two instrument types.
Keywords: megacity, trace gas, urban atmosphere, atmospheric transport, chemical composition, aerosol
Published in RUNG: 18.07.2019; Views: 3188; Downloads: 0
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19.
Tracer concentration profiles measured in central London as part of the REPARTEE campaign
Damien Martin, K Fredrik Petersson, Iain R. White, Stephen H Henshaw, Graham Nickless, Amy Lovelock, Janet F Barlow, Tyrone Dunbar, Curtis R Wood, Dudley E. Shallcross, 2011, original scientific article

Abstract: There have been relatively few tracer experiments carried out that have looked at vertical plume spread in urban areas. In this paper we present results from two tracer (cyclic perfluorocarbon) experiments carried out in 2006 and 2007 in central London centred on the BT Tower as part of the REPARTEE (Regent's Park and Tower Environmental Experiment) campaign. The height of the tower gives a unique opportunity to study vertical dispersion profiles and transport times in central London. Vertical gradients are contrasted with the relevant Pasquill stability classes. Estimation of lateral advection and vertical mixing times are made and compared with previous measurements. Data are then compared with a simple operational dispersion model and contrasted with data taken in central London as part of the DAPPLE campaign. This correlates dosage with non-dimensionalised distance from source. Such analyses illustrate the feasibility of the use of these empirical correlations over these prescribed distances in central London.
Keywords: advection, concentration (composition), dispersion, tracer, urban atmosphere, vertical mixing, vertical profile
Published in RUNG: 18.07.2019; Views: 3117; Downloads: 0
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20.
CityFlux perfluorocarbon tracer experiments
Fredrik K Petersson, Damien Martin, Iain R. White, Stephen J Henshaw, Graham Nickless, Ian Longley, Carl J Percival, Martin Gallagher, Dudley E. Shallcross, 2010, original scientific article

Abstract: In June 2006, two perfluorocarbon tracer experiments were conducted in central Manchester UK as part of the CityFlux campaign. The main aim was to investigate vertical dispersion in an urban area during convective conditions, but dispersion mechanisms within the street network were also studied. Paired receptors were used in most cases where one receptor was located at ground level and one at roof level. One receptor was located on the roof of Portland Tower which is an 80m high building in central Manchester. Source receptor distances in the two experiments varied between 120 and 600 m. The results reveal that maximum concentration was sometimes found at roof level rather than at ground level implying the effectiveness of convective forces on dispersion. The degree of vertical dispersion was found to be dependent on source receptor distance as well as on building height in proximity to the release site. Evidence of flow channelling in a street canyon was also found. Both a Gaussian profile and a street network model were applied and the results show that the urban topography may lead to highly effective flow channelling which therefore may be a very important dispersion mechanism should the right meteorological conditions prevail. The experimental results from this campaign have also been compared with a simple urban dispersion model that was developed during the DAPPLE framework and show good agreement with this. The results presented here are some of the first published regarding vertical dispersion. More tracer experiments are needed in order to further characterise vertical concentration profiles and their dependence on, for instance, atmospheric stability. The impact of urban topography on pollutant dispersion is important to focus on in future tracer experiments in order to improve performance of models as well as for our understanding of the relationship between air quality and public health.
Keywords: air quality, atmospheric chemistry, concentration (composition), convective system, dispersion, public health, street canyon, tracer, urban area
Published in RUNG: 18.07.2019; Views: 2933; Downloads: 0
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